Im pretty happy with my 36 Wright Stander. But being a large guy, even in relatively dry conditions, the mower was tracking heavy. Im careful to stagger my tracks by 1/3 each on each successive mow, but the tracks were still too visible. So with all the rain and soft soil, the narrow factory tires would only make things worse. I dont know if these larger tires will work, but theyre a full 1 wider. The original tires were 18-6.50-8NHS, and these are 18-7.50-8NHS. Thats about 17% wider. They fit on the factory wheels and dont increase the overall width of the mower (37.5). Nor do they require adjustment to the parking brake. The original tires had the Turf-Master tread, which works well, but this odd-ball size only comes in the Turf-Saver tread. There is one problem however. These wider tires just barely rub the frame of the mower. So I used some ½ (inside diameter) flat washers on the lug-bolts between the hub and the wheel, to stand the tires off the frame about ¼. These standard flat-washers are roughly 1/8 thick, so I doubled them (using 8 per wheel). The washers in the bin at the hardware store ranged somewhat in thickness, so be sure to match them so you dont introduce wobble to the wheel. I bought these tires from Cedar Rapids Tire ( http://shop.cedarrapidstire.com/index.asp ) for $66 with shipping, and they shipped them right away.